Having high neutrophils can sometimes indicate cancer but not always.
You can also have high neutrophils because you're stressed out and it doesn't always mean that you have cancer or have any potential cancer.
Still when you do have high neutrophils your doctor will likely want to do some more tests to ensure you do not have cancer.
Having high neutrophils counts can sometimes be dangerous and mean you have an infection or even sometimes cancer.
However not everyone who has high neutrophils when tested will have cancer or other infections but if you do get tested and have high neutrophils then the doctor will usually want to do some other tests.
I've had high neutrophils before and it turned out that I didn't have any infection or cancer which I'm thankful for.
However there have been some people who have had high neutrophils and then had either an infection or cancer.
But the high neutrophils itself does not always mean or indicate you have cancer or infections.
So it's best to not worry until you get the full tests done.